libZSservicesZSamazonka-kmsZSamazonka-kms
Copyright(c) 2013-2021 Brendan Hay
LicenseMozilla Public License, v. 2.0.
MaintainerBrendan Hay <brendan.g.hay+amazonka@gmail.com>
Stabilityauto-generated
Portabilitynon-portable (GHC extensions)
Safe HaskellNone

Amazonka.KMS.Sign

Description

Creates a digital signature for a message or message digest by using the private key in an asymmetric KMS key. To verify the signature, use the Verify operation, or use the public key in the same asymmetric KMS key outside of KMS. For information about symmetric and asymmetric KMS keys, see Using Symmetric and Asymmetric KMS keys in the Key Management Service Developer Guide.

Digital signatures are generated and verified by using asymmetric key pair, such as an RSA or ECC pair that is represented by an asymmetric KMS key. The key owner (or an authorized user) uses their private key to sign a message. Anyone with the public key can verify that the message was signed with that particular private key and that the message hasn't changed since it was signed.

To use the Sign operation, provide the following information:

  • Use the KeyId parameter to identify an asymmetric KMS key with a KeyUsage value of SIGN_VERIFY. To get the KeyUsage value of a KMS key, use the DescribeKey operation. The caller must have kms:Sign permission on the KMS key.
  • Use the Message parameter to specify the message or message digest to sign. You can submit messages of up to 4096 bytes. To sign a larger message, generate a hash digest of the message, and then provide the hash digest in the Message parameter. To indicate whether the message is a full message or a digest, use the MessageType parameter.
  • Choose a signing algorithm that is compatible with the KMS key.

When signing a message, be sure to record the KMS key and the signing algorithm. This information is required to verify the signature.

To verify the signature that this operation generates, use the Verify operation. Or use the GetPublicKey operation to download the public key and then use the public key to verify the signature outside of KMS.

The KMS key that you use for this operation must be in a compatible key state. For details, see Key state: Effect on your KMS key in the Key Management Service Developer Guide.

Cross-account use: Yes. To perform this operation with a KMS key in a different Amazon Web Services account, specify the key ARN or alias ARN in the value of the KeyId parameter.

Required permissions: kms:Sign (key policy)

Related operations: Verify

Synopsis

Creating a Request

data Sign Source #

See: newSign smart constructor.

Constructors

Sign' 

Fields

  • messageType :: Maybe MessageType

    Tells KMS whether the value of the Message parameter is a message or message digest. The default value, RAW, indicates a message. To indicate a message digest, enter DIGEST.

  • grantTokens :: Maybe [Text]

    A list of grant tokens.

    Use a grant token when your permission to call this operation comes from a new grant that has not yet achieved eventual consistency. For more information, see Grant token and Using a grant token in the Key Management Service Developer Guide.

  • keyId :: Text

    Identifies an asymmetric KMS key. KMS uses the private key in the asymmetric KMS key to sign the message. The KeyUsage type of the KMS key must be SIGN_VERIFY. To find the KeyUsage of a KMS key, use the DescribeKey operation.

    To specify a KMS key, use its key ID, key ARN, alias name, or alias ARN. When using an alias name, prefix it with "alias/". To specify a KMS key in a different Amazon Web Services account, you must use the key ARN or alias ARN.

    For example:

    • Key ID: 1234abcd-12ab-34cd-56ef-1234567890ab
    • Key ARN: arn:aws:kms:us-east-2:111122223333:key/1234abcd-12ab-34cd-56ef-1234567890ab
    • Alias name: alias/ExampleAlias
    • Alias ARN: arn:aws:kms:us-east-2:111122223333:alias/ExampleAlias

    To get the key ID and key ARN for a KMS key, use ListKeys or DescribeKey. To get the alias name and alias ARN, use ListAliases.

  • message :: Sensitive Base64

    Specifies the message or message digest to sign. Messages can be 0-4096 bytes. To sign a larger message, provide the message digest.

    If you provide a message, KMS generates a hash digest of the message and then signs it.

  • signingAlgorithm :: SigningAlgorithmSpec

    Specifies the signing algorithm to use when signing the message.

    Choose an algorithm that is compatible with the type and size of the specified asymmetric KMS key.

Instances

Instances details
Eq Sign Source # 
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Methods

(==) :: Sign -> Sign -> Bool #

(/=) :: Sign -> Sign -> Bool #

Show Sign Source # 
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Methods

showsPrec :: Int -> Sign -> ShowS #

show :: Sign -> String #

showList :: [Sign] -> ShowS #

Generic Sign Source # 
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Associated Types

type Rep Sign :: Type -> Type #

Methods

from :: Sign -> Rep Sign x #

to :: Rep Sign x -> Sign #

NFData Sign Source # 
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Methods

rnf :: Sign -> () #

Hashable Sign Source # 
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Methods

hashWithSalt :: Int -> Sign -> Int #

hash :: Sign -> Int #

ToJSON Sign Source # 
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AWSRequest Sign Source # 
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Associated Types

type AWSResponse Sign #

ToHeaders Sign Source # 
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toHeaders :: Sign -> [Header] #

ToPath Sign Source # 
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toPath :: Sign -> ByteString #

ToQuery Sign Source # 
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toQuery :: Sign -> QueryString #

type Rep Sign Source # 
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type AWSResponse Sign Source # 
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newSign Source #

Create a value of Sign with all optional fields omitted.

Use generic-lens or optics to modify other optional fields.

The following record fields are available, with the corresponding lenses provided for backwards compatibility:

$sel:messageType:Sign', sign_messageType - Tells KMS whether the value of the Message parameter is a message or message digest. The default value, RAW, indicates a message. To indicate a message digest, enter DIGEST.

$sel:grantTokens:Sign', sign_grantTokens - A list of grant tokens.

Use a grant token when your permission to call this operation comes from a new grant that has not yet achieved eventual consistency. For more information, see Grant token and Using a grant token in the Key Management Service Developer Guide.

$sel:keyId:Sign', sign_keyId - Identifies an asymmetric KMS key. KMS uses the private key in the asymmetric KMS key to sign the message. The KeyUsage type of the KMS key must be SIGN_VERIFY. To find the KeyUsage of a KMS key, use the DescribeKey operation.

To specify a KMS key, use its key ID, key ARN, alias name, or alias ARN. When using an alias name, prefix it with "alias/". To specify a KMS key in a different Amazon Web Services account, you must use the key ARN or alias ARN.

For example:

  • Key ID: 1234abcd-12ab-34cd-56ef-1234567890ab
  • Key ARN: arn:aws:kms:us-east-2:111122223333:key/1234abcd-12ab-34cd-56ef-1234567890ab
  • Alias name: alias/ExampleAlias
  • Alias ARN: arn:aws:kms:us-east-2:111122223333:alias/ExampleAlias

To get the key ID and key ARN for a KMS key, use ListKeys or DescribeKey. To get the alias name and alias ARN, use ListAliases.

$sel:message:Sign', sign_message - Specifies the message or message digest to sign. Messages can be 0-4096 bytes. To sign a larger message, provide the message digest.

If you provide a message, KMS generates a hash digest of the message and then signs it.-- -- Note: This Lens automatically encodes and decodes Base64 data. -- The underlying isomorphism will encode to Base64 representation during -- serialisation, and decode from Base64 representation during deserialisation. -- This Lens accepts and returns only raw unencoded data.

$sel:signingAlgorithm:Sign', sign_signingAlgorithm - Specifies the signing algorithm to use when signing the message.

Choose an algorithm that is compatible with the type and size of the specified asymmetric KMS key.

Request Lenses

sign_messageType :: Lens' Sign (Maybe MessageType) Source #

Tells KMS whether the value of the Message parameter is a message or message digest. The default value, RAW, indicates a message. To indicate a message digest, enter DIGEST.

sign_grantTokens :: Lens' Sign (Maybe [Text]) Source #

A list of grant tokens.

Use a grant token when your permission to call this operation comes from a new grant that has not yet achieved eventual consistency. For more information, see Grant token and Using a grant token in the Key Management Service Developer Guide.

sign_keyId :: Lens' Sign Text Source #

Identifies an asymmetric KMS key. KMS uses the private key in the asymmetric KMS key to sign the message. The KeyUsage type of the KMS key must be SIGN_VERIFY. To find the KeyUsage of a KMS key, use the DescribeKey operation.

To specify a KMS key, use its key ID, key ARN, alias name, or alias ARN. When using an alias name, prefix it with "alias/". To specify a KMS key in a different Amazon Web Services account, you must use the key ARN or alias ARN.

For example:

  • Key ID: 1234abcd-12ab-34cd-56ef-1234567890ab
  • Key ARN: arn:aws:kms:us-east-2:111122223333:key/1234abcd-12ab-34cd-56ef-1234567890ab
  • Alias name: alias/ExampleAlias
  • Alias ARN: arn:aws:kms:us-east-2:111122223333:alias/ExampleAlias

To get the key ID and key ARN for a KMS key, use ListKeys or DescribeKey. To get the alias name and alias ARN, use ListAliases.

sign_message :: Lens' Sign ByteString Source #

Specifies the message or message digest to sign. Messages can be 0-4096 bytes. To sign a larger message, provide the message digest.

If you provide a message, KMS generates a hash digest of the message and then signs it.-- -- Note: This Lens automatically encodes and decodes Base64 data. -- The underlying isomorphism will encode to Base64 representation during -- serialisation, and decode from Base64 representation during deserialisation. -- This Lens accepts and returns only raw unencoded data.

sign_signingAlgorithm :: Lens' Sign SigningAlgorithmSpec Source #

Specifies the signing algorithm to use when signing the message.

Choose an algorithm that is compatible with the type and size of the specified asymmetric KMS key.

Destructuring the Response

data SignResponse Source #

See: newSignResponse smart constructor.

Constructors

SignResponse' 

Fields

  • signingAlgorithm :: Maybe SigningAlgorithmSpec

    The signing algorithm that was used to sign the message.

  • signature :: Maybe Base64

    The cryptographic signature that was generated for the message.

    • When used with the supported RSA signing algorithms, the encoding of this value is defined by PKCS #1 in RFC 8017.
    • When used with the ECDSA_SHA_256, ECDSA_SHA_384, or ECDSA_SHA_512 signing algorithms, this value is a DER-encoded object as defined by ANS X9.62–2005 and RFC 3279 Section 2.2.3. This is the most commonly used signature format and is appropriate for most uses.

    When you use the HTTP API or the Amazon Web Services CLI, the value is Base64-encoded. Otherwise, it is not Base64-encoded.

  • keyId :: Maybe Text

    The Amazon Resource Name (key ARN) of the asymmetric KMS key that was used to sign the message.

  • httpStatus :: Int

    The response's http status code.

Instances

Instances details
Eq SignResponse Source # 
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Defined in Amazonka.KMS.Sign

Read SignResponse Source # 
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Show SignResponse Source # 
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Generic SignResponse Source # 
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Associated Types

type Rep SignResponse :: Type -> Type #

NFData SignResponse Source # 
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Methods

rnf :: SignResponse -> () #

type Rep SignResponse Source # 
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type Rep SignResponse = D1 ('MetaData "SignResponse" "Amazonka.KMS.Sign" "libZSservicesZSamazonka-kmsZSamazonka-kms" 'False) (C1 ('MetaCons "SignResponse'" 'PrefixI 'True) ((S1 ('MetaSel ('Just "signingAlgorithm") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 (Maybe SigningAlgorithmSpec)) :*: S1 ('MetaSel ('Just "signature") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 (Maybe Base64))) :*: (S1 ('MetaSel ('Just "keyId") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 (Maybe Text)) :*: S1 ('MetaSel ('Just "httpStatus") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 Int))))

newSignResponse Source #

Create a value of SignResponse with all optional fields omitted.

Use generic-lens or optics to modify other optional fields.

The following record fields are available, with the corresponding lenses provided for backwards compatibility:

$sel:signingAlgorithm:Sign', signResponse_signingAlgorithm - The signing algorithm that was used to sign the message.

$sel:signature:SignResponse', signResponse_signature - The cryptographic signature that was generated for the message.

  • When used with the supported RSA signing algorithms, the encoding of this value is defined by PKCS #1 in RFC 8017.
  • When used with the ECDSA_SHA_256, ECDSA_SHA_384, or ECDSA_SHA_512 signing algorithms, this value is a DER-encoded object as defined by ANS X9.62–2005 and RFC 3279 Section 2.2.3. This is the most commonly used signature format and is appropriate for most uses.

When you use the HTTP API or the Amazon Web Services CLI, the value is Base64-encoded. Otherwise, it is not Base64-encoded.-- -- Note: This Lens automatically encodes and decodes Base64 data. -- The underlying isomorphism will encode to Base64 representation during -- serialisation, and decode from Base64 representation during deserialisation. -- This Lens accepts and returns only raw unencoded data.

$sel:keyId:Sign', signResponse_keyId - The Amazon Resource Name (key ARN) of the asymmetric KMS key that was used to sign the message.

$sel:httpStatus:SignResponse', signResponse_httpStatus - The response's http status code.

Response Lenses

signResponse_signingAlgorithm :: Lens' SignResponse (Maybe SigningAlgorithmSpec) Source #

The signing algorithm that was used to sign the message.

signResponse_signature :: Lens' SignResponse (Maybe ByteString) Source #

The cryptographic signature that was generated for the message.

  • When used with the supported RSA signing algorithms, the encoding of this value is defined by PKCS #1 in RFC 8017.
  • When used with the ECDSA_SHA_256, ECDSA_SHA_384, or ECDSA_SHA_512 signing algorithms, this value is a DER-encoded object as defined by ANS X9.62–2005 and RFC 3279 Section 2.2.3. This is the most commonly used signature format and is appropriate for most uses.

When you use the HTTP API or the Amazon Web Services CLI, the value is Base64-encoded. Otherwise, it is not Base64-encoded.-- -- Note: This Lens automatically encodes and decodes Base64 data. -- The underlying isomorphism will encode to Base64 representation during -- serialisation, and decode from Base64 representation during deserialisation. -- This Lens accepts and returns only raw unencoded data.

signResponse_keyId :: Lens' SignResponse (Maybe Text) Source #

The Amazon Resource Name (key ARN) of the asymmetric KMS key that was used to sign the message.

signResponse_httpStatus :: Lens' SignResponse Int Source #

The response's http status code.